Postfix not sending mails to any outside domain except my own

Postfix is sending emails only for my domain, nemogucamisija.com. But not to gmail or any other. User however can receive emails from any mail servers (gmail, yahoo... ). Here is /var/log/maillog output:

I perhaps didn't explained it right - I tried to install ISPConfig, but installation failed. Then, I uninstaled ISPConfig and deleted what left and installed webmin+virtualmin. Because some settings still was left from ISP, I removed postfix (yum remove postfix) and then build postfix 2.9.4 from source as root.

Unfortunately, server gone live, web site must be running so some switch to ISPconfig is not a option now. Is there some own postfix solution to rebuild settings, or something in webmin/virtualmin?

I am having send problems on my new server as well, so take what I say with a grain of salt. I have done so much reading attempting to solve my problem, that I can readily see some problems with yours.

1. When you move from ispconfig to virtualmin (or from any panel to another for that matter), always do a complete re-install first. Different panels access system files differenly and you don't want the remains of one interfering with another.

2. Postfix should run as root. Here is a directory listing of a server that is running virtualmin/postfix/dovecot:

Notice that the mail directory is not virutal, but home_mailbox = Maildir/ ... the mail directory on this server is /home/domainName/Maildir. Basically, the mailbox configurations are handled differently in virtualmin than ispconfg.

I think he's trying to do the same thing I am: Using a mail client such as Outlook or Thunderbird, connected from outside of $mynetworks, send to a domain that is not $mydomain. Do you know how to do that?

2. i've posted above the link for the oficial postfix documentation did you even bother to click on it ? ... there are some examples on how to configure postfix with or without virtual users

3. postfix alone will not work because you'll need an imap,pop service to interact with the postfix MTA when you're sending mail from a mail client , or webmail ... dovecot,cyrus and/or courier will do that

4. to make this easy for you guys there are some very good all in one packages out there
(smtp,pop3,imap,webmail) like iRedMail , Zimbra both are using postfix as their MTA, or Axigen Free Edition that has it's own proprietary mail system with everything.

These being said , when you don't know how something works ... read the documentation!
Have fun!